package com.tza.web.t_net.client.sceens.client.component;

import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.AbstractImagePrototype;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.ImageBundle;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;

/**
 * The top panel, which contains the 'welcome' message and various links.
 */

@SuppressWarnings("deprecation")
public class TopPanel extends Composite implements ClickListener
{

   /**
    * An image bundle for this widgets images.
    */

   public interface Images extends ImageBundle
   {
      AbstractImagePrototype logo();
   }

   private HTML signOutLink = new HTML("<a href='javascript:;'>Sign Out</a>");
   private HTML aboutLink   = new HTML("<a href='javascript:;'>About</a>");

   public TopPanel(Images images)
   {
      HorizontalPanel outer = new HorizontalPanel();
      VerticalPanel inner = new VerticalPanel();

      outer.setHorizontalAlignment(HorizontalPanel.ALIGN_RIGHT);
      inner.setHorizontalAlignment(HorizontalPanel.ALIGN_RIGHT);

      HorizontalPanel links = new HorizontalPanel();
      links.setSpacing(4);
      links.add(signOutLink);
      links.add(aboutLink);

      final Image logo = images.logo().createImage();
      outer.add(logo);
      outer.setCellHorizontalAlignment(logo, HorizontalPanel.ALIGN_LEFT);

      outer.add(inner);
      inner.add(new HTML("<b>Welcome back, foo@example.com</b>"));
      inner.add(links);

      signOutLink.addClickListener(this);
      aboutLink.addClickListener(this);

      initWidget(outer);
      setStyleName("mail-TopPanel");
      links.setStyleName("mail-TopPanelLinks");
   }

   public void onClick(Widget sender)
   {
      if (sender == signOutLink)
      {
         Window.alert("If this were implemented, you would be signed out now.");
      }
      else if (sender == aboutLink)
      {
         // When the 'About' item is selected, show the AboutDialog.
         // Note that showing a dialog box does not block -- execution continues
         // normally, and the dialog fires an event when it is closed.
         AboutDialog dlg = new AboutDialog();
         dlg.show();
         dlg.center();
      }
   }
}
